Oil-gas generator and burner for stoves.



J. B. HARRELL, OIL GAS GENERATOR AND BURNER FOR STOVES. APPLICATION FILED MAY 6, 1908. RENEWED .MAY 21, 1910.

964,775. I Patented July 19, 1910.

WITNESSES:

A TTORNEY.

ms NORRIS PETERS co.. wnsnmcmn. u. c.

UNITED STATES PATENT OFFICE.

JESSEY F. HARRELL, 0F MONROE TOWNSHIP, MADISON COUNTY, INDIANA.

OIL-GAS GENERATOR AND BURNER FOR STOVES.

Specification of Letters Patent.

Patented July 19, 1910.

Application filed May 6, 1908, Serial No. 431,074. Renewed May 21, 1910. Serial No. 562,769.

To all whom it may concern: 1

Be it known that I, JnssnY F. HARRELL, a citizen of the United States, residing in Monroe township, in the county of Madison and State of Indiana, have invented certain new and useful Improvements in Oil-Gas Generators and Burners for Stoves; and I do declare the following to be a full, clear, and exact description of the invention, reference being had to the accompanying drawings, and to the letters and fi ures of reference marked thereon, which 'orm a part of this specification.

This invention relates to apparatus whereby hydro-carbon oil may be converted into gaseous fluid and consumed as fuel for producing heat in furnaces or fire-boxes of stoves, being adapted especially for use in cooking stoves or ranges.

The object of the invention is to provide a reliable, efficient and economical oil gas generator and burner for domestic use and which may be adapted for various other uses, a particular object being to provide apparatus of the above mentioned character that may be readily applied to cooking stoves without requiring material alteration of the stoves, so as to be applicable to stoves already in use for using other fuels.

With the above mentioned and minor objects in view, the invention consists in an improved oil gas generator and burner com prising certain novel features of construction, and parts and combinations and arrangements of parts, as hereinafter particularly described anddefined in the accompanying claims.

Referring to the drawings, Figure 1 is a fragmentary vertical central sectional view longitudinally of the fire-box of a cooking stove and showing the approved apparatus in elevation in connection therewith; Fig. 2, a top plan of the improved apparatus; Fig. 3, a vertical sectional View of the apparatus on the plane of the line A-A in Fig. 2; Fig. 4, a sectional View of the gas regulating valve as on the plane of the line B in Fig. 3; Fig. 5, a top plan of the regulating valve, and Fig. 6, a perspective view of the supporting stand of the apparatus and the pan on which heat is generated for starting the operation of the apparatus, the pan being minus the absorbent top thereof.

Similar reference characters in the different figures of the drawings indicate corresponding elements or features of construction.

The stove with which the apparatus is preferably adapted to be used comprises a main part 1, portions of which form parts of the fire-box in which are grate-bars 2, the stove having a top 3, a fire-box back 4; and a side door 5.

The supporting stand of the apparatus comprises a base-plate 6, on the ends of which are upright supports 7 and 7 provided on the inner sides thereof with ledges 8 and 8 arranged somewhat above the plate 6 and below the tops of the upright supports, the latter being braced by a pair of ribs 9 and 9. The pan 10, having a marginal upright rim 11, is placed on the ledges 8 and 8 removably, and it has an aperture .12 near the middle thereof that is surrounded by an upright rim 13, the pan having a recess 14: in one side near one end thereof and also a recess 15 in the opposite side thereof midway between the ends of the pan.

The base-plate 6 is oblong in plan so as to approximately cover the grate-bars, and the pan 10 is preferably of the same dimensions in plan as the base-plate 6. A clamp 16 is connected to the base-plate 6 near the upright support 7 and another clamp 17 is connected also to the base-plate near the middle portion thereof. The upright support 7 has an aperture 18 therein below the pan 10, and another aperture 19 above the plane of the pan, the support 7 havin an aperture 19 therein above the plane 0 the pan, the apertures 19 and 19 being in alinement and arranged near the forward edges of the supports. The support 7 has a saddle-bearing 20, and the support 7 has a similar bearing 20 in the top thereof for sup porting the main burner which comprises a tube 21 that is placed removably on the bearings in horizontal position, and it has apertures 22 in the uppermost portions of the wall thereof, the ends of the tube being closed by caps 23 and 23. The under side of the middle portion of the burner 21 is provided with an inlet tube 24 which serves as a part of a mixer so that atmospheric air may be mixed with gas entering the tube to the main burner.

A supply pipe for conveying oil, and a part of which forms a generating coil in which the oil is converted into gas and con- .veyed to the burner, comprises a horizontal portion thatis secured on the base-plate 6 by the clamp 16 and extends in one direction through a suitable opening at the botnected thereto for admitting and regulating the flow of oil to the pipe. The pipe comprises also an upright portion 27 that extends in the recess 14 of the pan 10 and upward past the front of the main burner, and a horizontal portion 28 continuing from the upright portion slightly above the horizontal plane of the top ofthe burner and for= ward of the vertical plane of the front of the burner, nearly to the end of the humor that is farthest from the door 5, the pipe having a curved portion 29 that extends from the portion 28 under the cap 23 of the burner and upward at the rear side of the burner, and a horizontal portion 30 extending from the curved portion parallel with the horizontal portion 28 toward the door 5 and has a vertical portion 31 extending downward therefrom in the recess 15 of the pan, and has ahorizontal portion 32 conne'cted therewiththat is secured by a clamp- 17 to the base-plate 6, the portion 3 2' having an upright portion 33 connected therewith which is connected to the body 34 of a feed valve by means of a flange 34 with whichthe valve body is provided, the valve body having a valve-seat 35 therein from which extends a discharge port 36' that is formed in a projection 36- on one side of the valve body, the orificeof' the port being adapted to deliver a jet upward into the inlet-tube 24, the valve body being arranged slightly below the lower end o f the inlet-tube so that when a jet of gas escapes from the port it will mix with air that will be drawn into the inlet-tube or mixing-tube, as is oustomary burning gas. A needle feed valve 37 is adapted to operate on the valve-seat 35 to either close or open the port 36 and has a stem 38 mounted in the valve body 34 and provided with: screw-threads 39 that are screwed into the valve body and having a packing-nut 40, and an operating-handle 41 that is on the endof the stem, the stem extending through a suitable opening in the door 5'and also through the aperture 18 in the support 7. A supply-pipe 42 is connec'ted to the valve 26, a nd has an' oil reservoir 43 connected therewith. The reservoir may be arranged at sufficient height to create gravity pressure, orpressure for feeding oil to the burner may be obtained as is customary by suitably creating air pressure inthe reservoir if the latter be placed at a relatively low level.

A trough 44 is provided that is supported in the apertures 19 and 19" and has small perforations 45 in the sides thereof, the ends of the trough having caps 46 and 46 thereon, so that the trough extends above the pan 1'0 and nearly under the main burner; A

I, priming pipe 47 is connected to the cap 46' and extends alongside of the portion 25 of I the main supply-pipe through the door 5, tom of the door 5 and has a valve 26 conand has a valve 48 connected thereto which ;is connected by a pipe 49 with the main supply-pipe 42 for admitting oil to the trough.

The pan 10 has a top 50 that is composed of suitable absorbent material such as asbestos-board to receive and absorb 011 from the trough 44 when starting the burner to operate.

In practical use a small quantity of oil is admitted through the valve 48 into the trough 44 by which the oil is distributed onto the absorbent-top 00', on the top of which gaseous fluid will form that may be ignited, and the resulting flame will heat the main burner and also the generator formed of the pipe portions 28' and: 30, and the valve 26 should then be opened (if not previously opened) to admit oil to the generator to be heated and thus converted into gas, and when gas has been formed the handle 41 may be turned slightly to admitgas andair mixed therewith into the burner at which ignition will take place from the flame in the pan beneath, and any oil remaining in the trough will be consumed and add its heat to the burner. After having used as much oil as may be necessary for starting the burner, the valve 48 should be closed and then the proper supply of oil will be regulated by the valve 26- and the quantity of gas regulated by the manipulation of the valve-stem 3'8. W'hen' it becomes necessary or desirable to clean or repair the apparatus, the stove lids may be removed, and then the main burner may be lifted freely from its-support, after which the pan 16' may be slightly tilted on its support so that the base-plate 6 will then be accessible,

and the packing-nut 40 may be readjusted or packing applied without requiring disconnection of the pipes or otherportions of the I apparatus.

Having thus described the invention what is claimed as new, is'' 1. In an oil gas generator and burner, the combination of a supporting stand comprising a base plate having an upright supporting plate on each end thereof, each plate having a ledge on the inner side thereof and having also a saddle-bearing on the top thereof, apan supported on the ledges and having an absorbent noncombustible top, and a trough supported above the top of the pan, with a burner supported on the saddle-bearings, and a generator pipe leading to the burner.

2. In an oilgas generator and burner, the combination of a supporting frame, a

burner mounted on the frame and having an lnlet tube, a generator pipe having a portion thereof attached to the frame and two upright portions at opposite sides of the burner, the pipe having also a curved portion extending under an end of the burner and two horizontal portions extending from the curved portion to the upright portions, one of the upright portions having a short horizontal portion at the lower end thereof that is attached to the frame, said short portion having a short upright portion connected thereto, and a valve connected with said short upright portion under the inlet tube of the burner.

3. In an oil gas generator and burner, the combination of a supporting frame, a pan mounted on the frame and having an aperture therein and having also an upright rim extending about the aperture, a burner mounted on the frame above the pan and having an inlet tube attached to the under side thereof and extending through the aperture, a generator pipe attached to the frame and terminating below the pan opposite the inlet tube, a valve body attached to the terminalend of the pipe and having a projection on the side thereof, the body having a duct therein extending through said projection, and a valve in said body to close or open said duct.

4. In an oil as generator and burner, the combination of a supporting stand comprising a base plate and two upright supporting plates, each upright supporting plate having a ledge thereon and an aperture therein above the plane of the ledges, a pan mounted on the ledges and having an aperture therein and having also a recess in each side thereof, a rim on the top of the pan at the edge thereof, a rim on the pan extending about the aperture, an absorbent non-combustible top on the pan, a trough mounted in the apertures of the upright supporting plates above the pan, a burner mounted on the stand above the pan, an inlet tube attached to the burner and extending through the aperture of the pan, a combined supply and generator pipe extending in the recesses of the pan and under an end of the burner and also along the burner and terminating under the pan opposite the inlet tube, a regulating valve connected to the terminal end of the pipe, an inlet valve connected to the inlet end of the pipe, a main supply pipe connected to the inlet valve, a priming pipe connected to the trough, and an inlet valve connected to the priming pipe and connected with the main sup ly pipe.

In testimony whereof, I ai x my signature in presence of two witnesses.

JESSEY F. HARRELL. Witnesses:

EDMUND F. MILLER, WILLIAM W. FENIMORE. 

